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The main reason might be that you never heard of the sword , but chinese ,& japan people have huge history so when i dig in reading some stuff i found it out myself .
After reading lots of stuff i decided to make a blog and share it with community.
I also took a bit of content from other web sites but only accurate information because i'm not here to spread missinformation....!
P.S you can find the sword on Hubei Provincial Museum.
With pleasure @penningtonlens , i do that for my respective followers and i try to respond as much as i can since i also work a full time job , so from time to time i might miss any comment or respond late sometimes.

Great stuff, man. I'll be keeping an eye out for your posts!